lec_simple_pub.py

import paho.mqtt.client as mqtt
import time

mqttc = mqtt.Client()
mqttc.connect( "iot.eclipse.org" ) # test broker

counter = 0
while True:
	message = "Hello World {}!".format(counter)

	print( message )
	mqttc.publish( "mytest/counter", message )
	mqttc.loop() 

	counter += 1
	time.sleep(2)